Window-screen.



G. W. FISHER.

WINDOW SCREEN. APQucATloN man MAR..|2. |911.

Patented Oct. 23, 1917.

2 SHEETS-SHEETI G. W. FISHER.

WINDOW SCREEN'.

APPLICATION FILED MAR. I2. IJI?. y rg 1,243,928. Patented 00L-2.31m?.

2 SHEETS SHEET 7 y: aan strains ramena carica.

GEORGE W. `FISHER, OF FREELAND, MARYLAND, ASSIGNOR 0F ONE-THIRD TO CHARLES W. MONTGOMERY, 0F WASHINGTON, DISTRICT 0F COLUMBIA.

wINnow-scnEE-N.

, masses.

To all 'whom t may concern:

Be it known that I, GEORGE W. FISHER, a citizen of the United States, residing at 'Freeland, in the county of Baltimore and State of Maryland, have invented certain new and useful Improvements in Window- Screens; and I do declare the following to be a full, clear, and exact description of the invention, such in the art to which it appertains to make and use the same.

My invention relates to improvements in window-screens of the type which are automatically stretched for use when the window sash is raised, and the principal object is t0 provide a novel arrangement of parts whereby the screen. extending means may be thrown out of action at will to permit raising of the sash without stretching the screen over the opening thus formed.

With the foregoing general object in view, the invention resides in certain novel features of construction and unique combinations of parts to be hereinafter fully described and claimed, the descriptive matter being supplemented by thev accompanying drawings which constitute a part of this application and in which:

Figure 1 is an inner side elevation-ofv a window and the improved screen applied thereto;

Fig. 2 is l to Fig. 1 with one of the ordinary sash guiding beads broken away to more clearly illustrate the driving inion for the roller upon which the screen 1s wound;

Fig. 3 is an lenlarged elevation of one lower corner o the window with parts broken away and in section;

Fig.' 4 is an enlarged vertical transverse section on the plane of the line 4-4 of Fig. 3;

Fig. 5 is a horizontal section substantially on the plane indicated by the line 5--5 of Fig. 3, showing the driving pinion in mesh with its rack bar;

Fig. 6 is a similar" view showing the pinion shifted out of mesh with said bar;

Fig. 7 is an enlarged vertical section on the plane of the line 7--7 of Fig. 1;

Fig. 8 is an inner side elevation of the lower end of the lower sash;

Fig. 9 is a perspective view of the pinion shifting means and the guide thereof;

Fig. 10 is a perspective showing the lower as will enable others skilled a fragmentary elevation similar l at- 13, a suitable means lSpecification of Letters Patent T atnted @cpg 23, 191%.,

Application filed March 12, 1917. Serial No. 154,311.

'of which are mounted slidably in the usual manner and guided by suitable strips or beads. One of these beads is identiied in the drawing by the numeral 4 and is of greater size than those usually employed and of special construction to be described.y

'I he lower end of the lower sash' 3 carries a metal casing 5 extending throughout the width of the sash and open at its inner side as illustrated most clearly in Figs. 5 and 7 ,1

said casing receiving therein a roller 6 to which the upper end of an appropriate screen 7 is secured, the other end of said screen havingl a reinforcing strip 8 coacting with a pair of plvoted latches 9 located adjacent the sides .ofthe frame. 'The function of the latches 9 is` to hold the strip 8 in vengagement with the sill 10 of the frame 1 in order that raisin of the sash 3 may project the screen 7,

said screen being totally wound onv the roller 6 when said sash is lowered.

For rotating the roller 6 to rewind the screen 7 thereon when the sash 3 is lowered, pinion 11 and a vertical rack bar 12 are end of said roller whereas the bar 12 is inset in the inner side of the bead 4 as illus. trated most clearly in Figs. 4, 5 and 10. These parts also mechanically rotate the roller 6 to unwind the screen when the sash is raised, the proportion of parts being such that when said sash is elevated to the maximum, the screen will be stretched taut over the open space below said sash.

It is oftendesirable to raise thel sash 3 without moving the screen to operative position and novel provision is made for permitting such operation. The pinion 11 is slidably mounted on one end of the roller 6, which end is preferably squared as shown being provided for shifting said pinion into and out of mesh with the rack 12 at will, in order that it 'may be rotated or may remain idle as occasion may demand. When the pinion is shifted out of engagement with the rack, it travels in a vertical groove 14 in theinner side of the bead 4 whenever the sash is rovided, said pinion being carried on one Since it is undesirable to have the pinionv 11 shifted either into or out of mesh with the rack 12 when the sash is raised, the shifting means for said pinion is carried by the sill 10 and is operable only when said sash is lowered, said means being shown in the form of a slide 15 having a fork 16 received in a groove 17 on the hub of the pinion 11, one end of said slide having an upstanding operating handle 18` which rises through a vslot 19in the usual finishing strip 20 secured to the upper Asurface ofthe sill 10 (see more particularly Fig. 5). The slide 15 is mounted on parallel tracks 21 inset in a shallow channel 22 formed in the upper side of the window sill and said tracks are preferably formed integrally at one end with an attach-- ing plate 23. `By the arrangement of parts described, the hub ofthe pinion 11 will move from the fork 16 when the sash is raised and thus said pinion cannot be -shifted until the sash is again lowered. When lowered, however, shifting of the handle `18 will move pinion 11 into or out of mesh with its rack bar 12 as occasion may demand.

From the foregoing, taken in connection with the accompanying drawings, it will be observed that although the invention is of comparatively simple and inexpensive nature, it will be eflicient and convenient. Since these advantages are best derived from the construction shown and described, this arrangement constitutes the preferred form of the device. It is to be understood, =how,- ever, that within the scope of the invention as claimed, numerous changes may be made without sacrificing the principal advantages.

l claim:

\ 1. ln combination, a Window-frame, a sash slidable vertically therein, a roller mounted on said sash, a lscreen wound on saidroller, means for detachably-securing the free end of said screen to one end of the frame, means for rotating said roller when the sash is opened or closed, including a fixed unit car-` ried by the frame, a shiftable unit movable nacaeae unit when the sash is closed.

2. 'lln combination, a window-frame, a sash slidable vertically therein, a roller mounted on said sash, Ya screen wound on said roller, means for detachably securing the free end of said screen to one end of the frame, means for rotating said roller when the sash is opened or closed, including a rack bar carried by the frame and a shiftable pinion movable with the sash, and means at one end of said frame for shifting said pinion into and out of mesh with said rack bar` when said sash is closed.

3. lln combination, a window-frame, a sash slidable vertically therein, a roller mounted on said sash, ascreen wound on said roller, means for detachably securing the free end of'said screen to one end of the frame, means -for rotating said roller when the sash is opened "or closed, including a rack bar carried by the frame and a pinion mounted slidably on one end of said roller, the hub of said pinion having a peripheral groove, and a shiftable fork mounted at one end of the frame for reception insaid groove when the sash is closed to permit shifting of said fork to correspondingly shift the pinion into or out of mesh with saidrack bar.

' 4. ln combination, a window-frame, a sliding sash therein, a roller mounted on said sash, a screen wound on said roller, means for detachably securing the free end of said screen to one end of said frame, 'a pinion rotatable bodily with and slidable longitudinally of said roller, a rack bar carried by the frame for co-action With said pinion to rotate said roller, and means for sliding said lpinion intoor out of mesh with said rack ar. i

lln testimony whereof ll have hereunto set my hand inthe presence of two subscribing witnesses.

V. F. Biron, 0). L. Banny. 

